Why does fluoresce of FPs decreases in organic solvents?

More Pardha Saradhi Attuluri's questions See All

Can any one please identify the freshwater plankton species in the attached pictures?

We are collecting information on the impact of water pollution on freshwater plankton in and around the University of Delhi. We have a problem in identifying several species. Can someone please...

23 February 2021 9,792 7 View

Filing solution for organic nonaqueous pH probe ?

Hello, I want to measure/adjust the pH of tetrahydrofuran (THF) of different dilutions with water. After reading brochures some of the pH meters, I get to know that LiCl in Ethanol should be used...

04 November 2019 9,097 0 View

What are open source software for cellular network design and optimization?

DEM and 3D model of an area are my inputs for software.

07 April 2019 5,688 3 View

What exactly is the role of antimony in estimation of phosphate using ammonium molybdate with ascorbic acid as a reducing agent?

Antimony potassium tartarate hemihydrate is often used for quantification of phosphate using ammonium molybdate method with ascorbic acid as a reducing agent. We are recording significant decline...

20 January 2019 6,736 4 View

In Chl a OJIP fluorescence transient, can stress induced cyclic photophosphorylation be linked with increase J-I and I-P rise/steps?

In an ideal Chl a OJIP fluorescence transient, we record distinct O-J, J-I and I-P steps. Plants exposed to stress often show alteration in this OJIP fluorescence transient kinetics and...

07 August 2018 5,968 6 View

Calculate Time frame for UV treatment for cells?

Hello I would like to conduct a mock experiment on plant cells nucleotide excision repair. the UV sourse I have is a tube light used in laminar hood. UV lamp specifications: emmission @254nm...

17 January 2018 381 7 View

What is the permittivity of PTB7:PCBM?

I am simulating PTB7:PCBM solar cells in Sentaurus device and require the among other data, the value of permittivity of PTB7:PCBM? Can anyone point to references please? Thanks Ananth

03 January 2017 6,398 3 View

How to calculate Permitted daily exposure of an Active pharmaceutical ingredient?is it applicable to API?Or Maximum daily dose needs to be considered?

There will not be any adverse effects caused by an API. Hence, please advise the formula for calculating the PDE of an API

05 December 2016 8,315 8 View

What are the units of current which Silvaco ATLAS uses by default when calculating the current using solve statement??

I am a little confused as to what units silvaco ATLAS uses when computing the current when solve statement is used to compute the I-V characteristics of a solar cell. The example solarex07.in...

22 August 2015 9,181 10 View

Is it possible to add ITO-coated glass as a material in Silvaco ATLAS?

I am trying to simulate a conventional solar cell with ITO-coated glass as a substrate. How do I add ITO-coated glass as a material in Silvaco ATLAS?

17 August 2015 8,901 3 View

Hello researchers Is this a random laser or just fluorescence?

I am using Rhodamine6G as gain medium and silver nanoparticles as scatterers on a microscope slide and laser input 532 nm comes from above.

09 August 2024 9,894 2 View

Can I use a HisTRAP column for affinity chromatography?

I'm working on selecting antibodies against a recombinant protein that has a His-tag. My idea is to first bind the recombinant protein to a HisTRAP column and then use this column for an affinity...

07 August 2024 505 3 View

Why does my protein refolded to beta sheet during thermal denaturation analysis?

Hi! So i attempted to understand a novel protein behavior towards heat application by analyzing its secondary structure change. I subjected the protein to a thermal denaturation analysis using...

06 August 2024 1,989 3 View

Weak DAPI staining after immunohistochemistry - how to improve?

After immunohistochemistry of previously fixed in PFA and EtOH and then frozen 20 μm sections of zebrafish brain, DAPI staining is very weak (right) compared to the same sections stained without...

05 August 2024 9,637 2 View

Could dyes amplify the spectrum of light to a specific wavelength?

I am interested to know the behavior of dyes toward light. Specifically, Blue dyes re-emit the spectrum, especially from the green zone (known as principal in LED lamps, and blue dyes are known...

05 August 2024 3,290 1 View

How can we use mobile apps for improving students' academic performance?

Mobile apps can be a powerful tool for enhancing academic performance, how can we use mobile apps for improving academic performance

04 August 2024 9,492 0 View

Are there any commercially available Donkey anti-Alpaca secondary antibodies?

Are there any fluorescently labeled anti-Alpaca secondary antibodies raised in Donkey? So far I have only been able to find anti-Alpaca secondaries raised in Goat. Or is this not possible due to...

04 August 2024 4,255 1 View

Why results of ROS flurescence are negative as there was no bacteria within?

Hello. I am working on ROS production of two systems: system A is cerium oxide and hydrogen peroxide, system B is cerium oxide nanoparticle, hydrogen peroxide and potassium bromide. I did some...

04 August 2024 5,974 3 View

How to calculate the molar proportions of the oxides from the XRF analyses?

02 August 2024 2,565 2 View

What is the problem with these tissue culture plants?

All plants are green but some of these plants becomes yellow. I did not found any reason. Please help me to find out the real problem.

01 August 2024 589 4 View

V. N. Ravi Kishore V.

There could be different reasons

1. Fluorescence quantum yield is polarity sensitive. It changes with the polarity of the solvent.

2. In non-polar solvents, the solubility of the particles can decrease leading to aggregation. Aggregates can have lower fluorescence quantum yield leading to lower fluorescence intensity.

I hope this helps

Pardha Saradhi Attuluri

in that case if i change solvent to nonpolar from polar, i loose fluorescence and if i revert back solvent i can bring it back. and if the organic solvent is polar fluorescence should not be decreased. am i correct?